Pattern mechanism for looms.



PATENTED SEPT. 5, 1905.

R. OROMPTON.

PATTERN MECHANISM FOR LOOMS.

APPLIOATIOH FILED SEPT.30, 1904.

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PATENTED SEPT. 5, 1905.

R. OROMPTON.

PATTERN MECHANISM FOR LOOMS.

APPLICATION IILED SEPT. 30, 1904.

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PATENTED SEPT. 5, 1905.

R. CROMPTON. PATTERN MECHANISM FOR LOOMS.

APPLICATION FILED SEPT.30,1904.

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UNTTED STATES PATENT OFFTQE.

RANmLru GROMVJON, or woneacsrnu, MAssAmuisn'r'rs, AsslcNou 'ro runsnnr, cacao-r1 caom roN, EDWARD n. 'ruAvlcn, ANn WILLIAM B. scoriann, or woaoicsrna, MAssAcnUsa'rrs. DOING- nusiNass As UROMPlON-THAYER LOUM conrANv, or \YOROIGS'IIGh, MAssAcnU- sa'as, A FIRM.

PATTERN MECHANISM FOR LOOlVlS- No. 798,764. Specification of Letters Patent. Patented Sept. 5, 1905.

Application filed September 30, 1904. Serial No- 226,628.

W omitted) of the parts shown in Fig. 1. Fig. lie it known that l, RANDOLPH uonr'rox, a 3 is a detail showing the pawl-arm and single citizenofthe UnitedStates,residingat \Vorcespawl of peculiar construction. Fig. it shows ter, county of \Vorcester, State of Massachua pawl-shifting indicatorof the main pattern 55 5 setts, have invented an Improvement in Patsurface or chain as having just operated to tern Mechanism for Looms, of which the folstart the pawl, so that its movement may be lowing description, in connection with the accompleted by a spring to be described. Fig. companying drawings, is a specification, like 5 shows the opposite end of the pawl as havcharacters on the drawings representing like ing been put in contact with the ratchetwheel parts. of the auxiliary pattern surface or chain Thisinvention relates to pattern mechanism ready to move that ratchet-wheel. Fig. 6 used in looms to control the movement of the shows the pawl as moving said rzuchet-whcel. shuttle-boxes, and has for its object to avoid Fig. 7 shows the auxiliary pattern surface or using long, cumbersome, and heavy chains. chain as havingstarted the pawl and caused its 5 5 Prior to myinvention there havebeen used retirement from the ratchet-wheel of the with the main and auxiliary 1)attern-surfaces auxiliary pattern surface or chain, and Fig. 8 having ratchet-wheels weighted indicator-leshows the opposite end of the pawl as in povers moved each by its own indicators and sition to actuate the ratchet-wheel of the main connected with and moving pawl guards or pattern surface or chain at the next stroke of 7 2O shields cooperating with the other ratchetthe pawl-arm.

wheel of the other pattern-surface and the The framework A, stud A, sustaining the pawl for moving it step by step, and in this pivoted lingers A, connected by rods A with wayeach pattern-surfacethrough said weightthe usual vibrator-lever or other lever of any ed indicator-lever and pawl-shields puts into usual shuttle-box mechanism, such as com- 75 5 operation one or another of two pawls, both monly used in so-called Urompton looms, mounted on separate pins of a vibrating pawl- (see United States Patent No. $05,6l5,) the arm. In accordance with my invention I crank-shaft B, its pinion l%', the shaft B exprovide both the main pattern-surface or tended thorough a bearing B and carrying chain, and the auxiliary pattern-surface or the notched disks B and constituting a car- 3 chain, with pawl-shifting indicators, the indirier for the main pattern surface or chain B, cators of each set of said pawl-shifting indicomprising links connected by bars 1/ surcaters acting atintervals on heels of said pawl rounded by tubes and balls 1/, constituting to throw said pawl out of engagement with pick-suspending indicators, the ratchet-wheel the rachet-wheel last moved by it and plac- H, the notched locking-wheel B", the locking- 5 ing said pawl in position to act by its oppolever B and the shaft C, its ratchet-wheel site end at its next stroke to engage and move C, disks (.1 carrying the auxiliary pattern the other ratchet-wheel and the pattern sursurface or chain U", the notched wheel U, and face or chain carried by it. The single pawl locking-lever C connected by spring U, are referred to has besides the end to engage and and may be all as usual. 9 4 move one of the ratchet-wheels a toe that is In accordance with my invention 1 mount acted upon by a pawl-shifting indicator caron a stud l) a pawl-arm I), having two stops ried by the pattern surface or chain then op- (1 (l' and a stud (1, and an arm I), provided erative when the time arrives that that parwith guides to receive a rod D. having at its ticular surface or chain should be stopped and lower end a roller or other stud (1, that enters 95 the other surface or chain be started. The a cam-groove (Z in a disk 1), fast on a short single pawl has a third arm, thus making a shaft I)", having at its opposite end a toothed T-shaped pawl that is carried by a pawl-arm. wheel D, driven by the pinion B, said rod Figure l in plan view shows a sufficient being provided with a collar 1/, and between jart of a loom with my improvements added i said collar and the upper guide a spring (Z is 5 to enable my invention to be understood. interposed. The stud 1] receives the novel Fig. 2 is a side elevation (the lingers being pawl E, shown as T-shaped, the same presenting a depending leg 0 and two rigid arms 6 6 the opposite ends .2- 3 of which act in one or the other position of said pawl on its stud to engage either the ratchet-wheel B and turn the main pattern surface or chain 13* or the ratchet-wheel C of the auxiliary pattern surface or chain 0". The opposite end of the top cross-bar of the pawl has extended thereform oppositely extcndedheels 4: 5. The heel at is extended over the main pattern surface or chain 13*, so that it is acted upon at intervals by pawl-shifting indicators 6, (any desired number,) carried by said pattern-surface. The heel 5 is extended (see Fig. 1) to cross over the auxiliary pattern. surface or chain C" and to be acted upon at suitable intervals by auxiliary pawl-shifting indicators 6', shown herein as longer projections of the chain C the shorter projections serving as pick-repeating indicators. The lower end of the pawl is adapted to be engaged by a springcontrolled radius-bar f, pivoted at 7 on the pawl-arm and connected operatively with the pawl by a pin 8 on one entering a slot 10 in the other, the pin being shown as carried by the pawl. The bar has a pin 71, with which is connected a spring 12, and the lower end of the spring is attached to a stud 13.

In operation let it be supposed (see Figs. 1 and 2) that the end 2 of the pawl E is in position to engage the ratchet-wheel B and turn the pattern-surface B, it operating to control the fingers A These figures show the pawl-arm and pawl as having completed their strokes to the left, the spring 12 through the bar f acting on the pin 8 and holding the end 2 of said pawl in contact with said ratchetwheel, the end 3 of the pawl then occupying its inoperative position and with the auxiliary pattern surface or chain at rest. The spring (Z acts yieldingly to turn the pawlarm in the direction to turn the pattern-surface. As the pawl-arm D is moved to the right, Fig. 2, by the cam-groove (Z the heel 4 will meet one of the pawl-shifting indicators and the pawl will be turned about the stud (Z for a distance (see Fig. t) suflicient to cause the pin 8 in the slot 10 to start the radius-bar to the left until the pin 71 at the upper end thereof passes a line cutting centrally the said stud, the pin 8, and the fulcrum 7 of the bar, when the stretched spring 12 acts immediately to move the radius-bar and cause it, acting on the pin 8, to further turn the pawl E into the position Fig. 5, with its end 3 in position, as the pawl-arm is moved by the cam-groove (Z from the position Fig. 4 into the position Figs. 5 and 6 to turn the auxiliary pattern-chain. As shown in the drawings, the heel 5 at one end of the-pawl will fall at the rear of the pawl-shifting indicator 6 of the auxiliary pattern surface or chain, and the pawl in the position Figs. 5 and 6 will continue to move the auxiliary pattern surface or chain at each stroke of the pawlarm until another pawl-shifting indicator on the auxiliary pattern surface or chain arrives in position to act on the heel 5, as in Fig. 7, when said pawl will be started, as in Fig. 7, and its movement will be completed through the spring 12, as in Fig. 8. So long as the pawl remains in the, position Figs. 5 and 6 the main pattern surface or chain will remain at rest, and consequently the distance between one and the next pawl-shifting indicator on the auxiliary pattern-surface will indicate the number of picks that may be taken from any bar a of the main pattern-surface, having the pick-suspending indicators (4.

I believe that I am the first to employ one and the same pawl to actuate both the ratchetwheel of the main pattern-surface and of the auxiliary pattern-surface and the first to control one and the same pawl by pawl-shifting indicators carried by two pattern surfaces or chains, and while the means shown herein illustrates one good and operative form of my invention I desire it to be understood that my invention is not to be limited to exactly the construction of device herein shown, but I include any means within the scope of the claims, however constructed, for effecting the results set forth in the claims.

I have designated the rolls a on the main pattern-surface as pick-suspending indicators and the short links of the auxiliary pattern-surface as pick-repeating indicators, and each pattern-surface has its own pawlshifting indicators.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a loom, a main and an auxiliary pattern-surface having pawl-shifting indicators, and a pawl having two working ends and heels, the latter being adapted to be acted upon directly by the pawl-shifting indicators of either pattern-surface to cause the pattern-surface having the pawl-shifting indicator that is operative to move the pawl, to remain temporarily at rest while the pawl continues to move the other pattern surface or chain.

2. In a loom, a carrier having a ratchetwheel, a main pattern-surface mounted on said carrier and having pick-suspending and pawlshifting indicators, and a pawl having at one end a heel and a portion to engage said ratchetwheel, said heel being acted upon by a pawlshifting indicator when it is desired to leave at rest the pattern-surface, while a pick-suspending indicator of said chain is used a plurality of times.

3. In a loom, a main and an auxiliary pattern-surface, the former having pick-suspending indicators and pawl-shifting indicators, the-latter having a series of pawl-shifting indicators and pick-repeating indicators, combined with a single pawl, one end of which operates to turn the main pattern-surface, and the opposite end of which operates to IIO turn the auxiliary pattern-surface, the acting end of the pawl when meeting and being acted upon directly by a pawl-shifting indicator of either pattern-surface being turned to be disengaged from the pattern-surface that said pawl was then moving and being putinto engagement with and to move the other patternsurface.

t. In a pattern mechanism for looms, a main and auxiliary pattern-surface each having a ratchet-wheel. and presenting pawl-shifting indicators, a pawl-arm and a single pawl carried thereby and adapted to be acted upon at its opposite ends by the pawl-shifting indicators of one or the other of said pattern-surfaces to cause the then inactive end of said pawl to engage the ratchet-wheel of and move the other pattern-surface.

in a pattern mechanism for looms, a main and auxiliary pattern-surface, each having a ratchet-wheel and each carrying pawlshifting indicators, of a pawl-arm, means for moving the same, and a double-ended pawl having its ends shaped to engage each ratchetwheel, and having a heel at each end to be acted upon by each pawl-shifting indicator to cause the pawl to be turned on said pawl-arm that its opposite end may engage in turn the ratchet'wheelof the other pattern-surface.

6. In a pattern mechanism for looms, a main and auxiliary pattern-surface, each having a ratchet-wheel and each carrying pawlshifting indicators, of a pawl-arm, means for moving the same, and a double-ended pawl having its ends shaped to engage each ratchetwheel and having a heel at each end to be acted upon by each pawl-shifting indicator to cause the pawl to be turned on said pawl-arm that its opposite end may engage in turn the ratchet-wheel of the other pattern-surface, and means to complete the turning of said pawl and retain the same in engagement with the ratchet-wheel until said pawl is again engaged by a pawl-shifting indicator.

7. In a multiplying mechanism for dropbox looms, a plurality of pattern-surfaces, a common actuator for both surfaces, said actuator being changed by a pawl-shifting indicator of one surface and made to actuate the other surface.

8. In a multiplying mechanism for dropbox looms, a plurality of pattern-surfaces having pawl-shifting indicators and a pawl, said indicators acting directly on said pawl to suspend the operation thereof.

In testimony whereof l have signed my name to this specification in the presence of two subscribing witnesses.

RANDOLPH. (JROB'IPTON.

\Vitnesses:

Cuaumas F. Anmuou, MA'r'rIu L. VAN HoU'ruN. 

